PLC Manager

Larsen & Toubro; Nanded District; On-site; INR 1,800,000 - 3,200,000; Full time

Job summary

Larsen & Toubro in India seeks a senior control systems engineer with hands-on Siemens TIA Portal experience and deep safety PLC expertise. You will design and validate gas safety interlocks for hydrogen/oxygen handling, develop safety logic, and support virtual commissioning activities.

Prior team-lead experience and strong exposure to industrial fieldbus protocols are essential. The role emphasizes FAT/SAT testing, functional design documentation, and coordinating with contractors and

Qualifications

• Hands-on Siemens TIA Portal and safety PLCs experience.
• Experience with PROFIsafe and F-series safety logic development.
• Proficient in Siemens WinCC SCADA/HMI development.
• Design and validate gas-safety interlocks and ESD sequences for H2/O2 handling.
• Experience with FAT/SAT test protocols and FDS/I/O lists.
• Exposure to SIL simulation and virtual commissioning (PLCSIM Advanced).
• Team-leading or supervisory exposure, ideally with contract manpower.
• Exposure to Profibus, Profinet, CAN, Modbus TCP/RTU and OPC UA.

Responsibilities

• Design and validate gas-safety interlocks and shutdown sequences.
• Develop safety logic and validation using PROFIsafe and F-FB/F-FC.
• Lead or supervise project teams and coordinate with contractors.
• Support software-in-the-loop (SIL) simulation and virtual commissioning.
• Provide SCADA/HMI development using Siemens WinCC and FAT/SAT testing.

Skills

Siemens TIA Portal

Safety PLCs (S7-1500F/S7-400F)

PROFIsafe/F-FB/F-FC

Siemens WinCC (SCADA/HMI)

Gas safety interlocks & ESD

FDS/I/O lists/CRs

SIL simulation/PLCSIM Advanced

Team lead/ Supervisory

Industrial communication (Profibus/Pro

Profinet/ CAN / Modbus TCP/RTU / OPC 1

Tools

Siemens WinCC

PLCSIM Advanced

Job description

• 10+ years of hands-on experience in Siemens TIA Portalnamed directly (not just "PLC programming" generically).
• Proven experience with Siemens failsafe/F-series PLCs (e.g., S7-1500F, S7-400F/H, or equivalent) and safety logic development (PROFIsafe, F-FB/F-FC configuration, safety function validation).
• Hands-on experience with Siemens WinCC (Advanced/Comfort or Explorer) for SCADA/HMI development.
• Design and validate gas-safety interlocks and shutdown sequences for H2/O2 handling — including gas detection, purge/inerting logic, pressure/flow monitoring, and emergency shutdown (ESD) sequences.
• Understand and Develop software for: functional design specifications (FDS), I/O lists, control philosophy, P&ID cross-references, safety logic narratives, and test protocols (FAT/SAT).
• Support software-in-the-loop (SIL) simulation and virtual commissioning activities where applicable with exposure to software’s like PLCSIM Advanced.
• Team-lead or supervisory experience, ideally with contract/third-party manpower.
• Exposure to communication protocols: Profibus, Profinet, CAN, Modbus TCP/RTU, OPC UA.